Writing standard form

This task is about writing numbers in ordinary form and standard form.
 
Write each of the following numbers in standard form.
 
a)

 

The deepest part of Lake Manapouri is about 443 metres
 
= ____________________ metres

 


 

b)
The number of letters posted in New Zealand each year is about
 
818,900,000 = ____________________
 
 

 
c)
The population of New Zealand is close to 5.5 million
 
= ____________________
 
  
 
d) 
The thickness of fine wool is about 0.00002 metres
 
= ____________________ metres
 

 
e) 
A racing car can travel a metre in 0.012 seconds
 
= ____________________ seconds